Ichidan verb, Transitive verb
to warm (up); to heat (up)
ミルクを温めてくれませんか。Will you warm the milk, please? to sit on (an idea, plan, etc.); to keep to oneself; to nurse; to mull over
to renew (an old friendship)
see 旧交を温める
to take for oneself
Also written 暖める【あたためる】